<template>
  <div class="search-container">
    <!-- 搜索栏 -->
    <!--
      Tips: 在 van-search 外层增加 form 标签，且 action 不为空，即可在 iOS 输入法中显示搜索按钮
     -->
    <form action="/">
      <van-search
        v-model="searchText"
        show-action
        placeholder="请输入搜索关键词"
        background="#3296fa"
        @search="onSearch(searchText)"
        @cancel="onCancel"
        @focus="isResultShow=false"
      />
    </form>
    <!-- /搜索栏 -->

    <!-- 搜索结果 -->
<search-result v-if="isResultShow"
:searchText="searchText" 
 class="search-result" />
<!-- /搜索结果 -->

<!-- 联想建议 -->
<search-suggestion 

v-else-if="searchText"
:searchText="searchText" 
@search="onSearch"
/>
<!-- /联想建议 -->

<!-- 搜索历史记录 -->
<search-history 
:searchHistories="searchHistories" 
@search="onSearch"
@updatehistories="UpdateHistories"
v-else />
<!-- /搜索历史记录 -->
  </div>
</template>

<script>
import SearchHistory from './components/search-history'
import SearchSuggestion from './components/search-suggestion'
import SearchResult from './components/search-result'
import {getItem,setItem} from '@/utils/storage'
import { getUserSearcHistories }  from '@/api/search'

export default {
  name: 'SearchIndex',
  components: {
    SearchHistory,
    SearchSuggestion,
    SearchResult
  },
  props: {},
  data () {
    return {
      searchText: '',//搜索输入框内容
      isResultShow: false,//控制搜索接口的显示状态
      searchHistories: getItem('search-histories')||[]
    }
  },
  computed: {

  },
  watch: {},
  async created () {
    // const { data }=await getUserSearcHistories();
    // console.log(data)
  },
  mounted () {},
  methods: {
    onSearch (val) {
      this.isResultShow=true
      this.searchText=val
      // 存储搜索历史记录
      // 要求：不要有重复历史记录、最新的排在最前面
    const index = this.searchHistories.indexOf(val)
     if (index !== -1) {
      this.searchHistories.splice(index, 1)
  }
      this.searchHistories.unshift(val)
      setItem('search-histories',this.searchHistories)

    },
    UpdateHistories(val){
      this.searchHistories=val;
      setItem('search-histories',this.searchHistories)
    },
    onCancel () {
      this.$router.back()
    }
  }
}
</script>

<style scoped lang="less">
.search-container {
  .van-search__action {
    color: #fff;
  }
}
.search-result{
  position: fixed;
  left: 0;
  right: 0;
  top: 54px;
  bottom: 0;
  overflow-y: auto;
}
</style>